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IfcParse: allow reading of IFC file from stdin

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IfcServer: first commit of a stdin/stdout interface to IfcGeomObjects [undocumented for now]
BIMserver_plugin: first commit of IfcEngine plugin implementation for use with http://BIMserver.org [undocumented for now]
This commit is contained in:
Thomas Krijnen
2011-08-20 09:08:56 +00:00
parent 086d314a0c
commit 0b45066736
6 changed files with 173 additions and 11 deletions
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cmake/CMakeLists.txt
+3 -1
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@@ -58,7 +58,9 @@ CHECK_ADD_OCE_OCC_DEF(iomanip.h)
CHECK_ADD_OCE_OCC_DEF(iostream)
CHECK_ADD_OCE_OCC_DEF(iostream.h)
ADD_DEFINITIONS(-O2)
IF(NOT CMAKE_BUILD_TYPE)
SET(CMAKE_BUILD_TYPE "Release")
ENDIF(NOT CMAKE_BUILD_TYPE)
ADD_DEFINITIONS(-fPIC)
INCLUDE_DIRECTORIES(${OCC_INCLUDE_DIR})
src/ifcparse/IfcGeomObjects.cpp
+18
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@@ -275,6 +275,24 @@ extern bool IfcGeomObjects::Init(const char* fn, bool world_coords, std::ostream
total = shapereps->Size();
return true;
}
extern bool IfcGeomObjects::Init(std::istream& f, int len, bool world_coords, std::ostream* log1, std::ostream* log2) {
if ( log1 || log2 ) Ifc::SetOutput(log1,log2);
use_world_coords = world_coords;
if ( !Ifc::Init(f, len) ) return false;
shapereps = Ifc::EntitiesByType<Ifc2x3::IfcShapeRepresentation>();
if ( ! shapereps ) return false;
outer = shapereps->begin();
entities.reset();
currentGeomObj = _get();
if ( ! currentGeomObj ) return false;
done = 0;
total = shapereps->Size();
return true;
}
extern int IfcGeomObjects::Progress() {
return 100 * done / total;
}
src/ifcparse/IfcGeomObjects.h
+1
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@@ -98,6 +98,7 @@ namespace IfcGeomObjects {
};
extern bool Init(const char* fn, bool world_coords = false, std::ostream* log1= 0, std::ostream* log2= 0);
extern bool Init(std::istream& f, int len, bool world_coords = false, std::ostream* log1= 0, std::ostream* log2= 0);
extern const IfcGeomObject* Get();
extern bool Next();
extern int Progress();
src/ifcparse/IfcParse.cpp
+40 -7
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@@ -39,6 +39,7 @@ File::File(const std::string& fn) {
stream.seekg(0,std::ios_base::end);
size = (unsigned int) stream.tellg();
stream.seekg(0,std::ios_base::beg);
paging = size > BUF_SIZE;
buffer = new char[size < BUF_SIZE ? size : BUF_SIZE];
ptr = 0;
len = 0;
@@ -46,6 +47,18 @@ File::File(const std::string& fn) {
ReadBuffer(false);
}
File::File(std::istream& f, int l) {
eof = false;
size = l;
paging = false;
buffer = new char[size];
f.read(buffer,size);
valid = f.gcount() == size;
ptr = 0;
len = l;
offset = 0;
}
void File::Close() {
stream.close();
delete[] buffer;
@@ -71,7 +84,10 @@ void File::ReadBuffer(bool inc) {
// Seeks an arbitrary position in the file
//
void File::Seek(unsigned int o) {
if ( o >= offset && (o < (offset+len)) ) {
if ( !paging ) {
ptr = o;
eof = false;
} else if ( o >= offset && (o < (offset+len)) ) {
ptr = o - offset;
} else {
offset = o;
@@ -92,7 +108,9 @@ char File::Peek() {
// Returns the character at specified offset
//
char File::Read(unsigned int o) {
if ( o >= offset && (o < (offset+len)) ) {
if ( ! paging ) {
return buffer[o];
} else if ( o >= offset && (o < (offset+len)) ) {
return buffer[o-offset];
} else {
stream.clear();
@@ -112,7 +130,10 @@ unsigned int File::Tell() {
// Increments cursor and reads new chunk if necessary
//
void File::Inc() {
if ( ++ptr == len ) { ReadBuffer(); }
if ( ++ptr == len ) {
if ( paging ) ReadBuffer();
else eof = true;
}
}
Tokens::Tokens(IfcParse::File *f) {
@@ -433,6 +454,7 @@ void Entity::Load(std::vector<unsigned int>& ids, bool seek) {
if ( seek ) {
Ifc::file->Seek(offset);
Token datatype = Ifc::tokens->Next();
std::string dt = TokenFunc::toString(datatype);
if ( ! TokenFunc::isDatatype(datatype)) throw IfcException("Unexpected token while parsing entity");
_type = Ifc2x3::Type::FromString(TokenFunc::asString(datatype));
}
@@ -502,7 +524,13 @@ unsigned int Entity::id() { return _id; }
// Gets the unit definitins from the file
//
bool Ifc::Init(const std::string& fn) {
file = new File (fn);
return Ifc::Init(new File(fn));
}
bool Ifc::Init(std::istream& f, int len) {
return Ifc::Init(new File(f,len));
}
bool Ifc::Init(IfcParse::File* f) {
file = f;
if ( ! file->valid ) return false;
tokens = new Tokens (file);
Token token = 0;
@@ -545,9 +573,14 @@ bool Ifc::Init(const std::string& fn) {
}
if ( log1 ) std::cout << "\rDone scanning file " << std::endl;
Ifc2x3::IfcUnitAssignment::ptr unit_assignment = *EntitiesByType<Ifc2x3::IfcUnitAssignment>()->begin();
IfcUtil::IfcAbstractSelect::list units = unit_assignment->Units();
Ifc2x3::IfcUnitAssignment::list unit_assignments = EntitiesByType<Ifc2x3::IfcUnitAssignment>();
IfcUtil::IfcAbstractSelect::list units = IfcUtil::IfcAbstractSelect::list();
if ( unit_assignments->Size() ) {
Ifc2x3::IfcUnitAssignment::ptr unit_assignment = *unit_assignments->begin();
IfcUtil::IfcAbstractSelect::list units = unit_assignment->Units();
}
if ( units )
for ( IfcUtil::IfcAbstractSelect::it it = units->begin(); it != units->end(); ++ it ) {
const IfcUtil::IfcAbstractSelect::ptr base = *it;
Ifc2x3::IfcSIUnit::ptr unit = Ifc2x3::IfcSIUnit::ptr();
src/ifcparse/IfcParse.h
+8 -3
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@@ -61,11 +61,13 @@ namespace IfcParse {
unsigned int len;
unsigned int offset;
void ReadBuffer(bool inc=true);
bool paging;
public:
bool valid;
bool eof;
unsigned int size;
File(const std::string& fn);
File(std::istream& f, int len);
char Peek();
char Read(unsigned int offset);
void Inc();
@@ -258,9 +260,10 @@ public:
template <class T>
static typename T::list EntitiesByType() {
IfcEntities e = EntitiesByType(T::Class());
typename T::list l ( new IfcTemplatedEntityList<T>() ); \
for ( IfcEntityList::it it = e->begin(); it != e->end(); ++ it ) { \
l->push(reinterpret_pointer_cast<IfcUtil::IfcBaseClass,T>(*it));\
typename T::list l ( new IfcTemplatedEntityList<T>() );
if ( e && e->Size() )
for ( IfcEntityList::it it = e->begin(); it != e->end(); ++ it ) {
l->push(reinterpret_pointer_cast<IfcUtil::IfcBaseClass,T>(*it));
}
return l;
}
@@ -268,6 +271,8 @@ public:
static IfcEntities EntitiesByReference(int id);
static IfcEntity EntityById(int id);
static bool Init(const std::string& fn);
static bool Init(std::istream& fn, int len);
static bool Init(IfcParse::File* f);
static void Dispose();
static float LengthUnit;
static float PlaneAngleUnit;
src/ifcserver/IfcServer.cpp
+103
View File
@@ -0,0 +1,103 @@
/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
/********************************************************************************
* *
* This examples exposes the IfcOpenShell API through a command-based stdin *
* interface *
* *
********************************************************************************/
#include <iostream>
#include "../ifcparse/IfcGeomObjects.h"
#if defined(WIN32) && !defined(__CYGWIN__)
#include <io.h>
#include <fcntl.h>
#endif
int main ( int argc, char** argv ) {
#if defined(WIN32) && !defined(__CYGWIN__)
_setmode(_fileno(stdout), _O_BINARY);
std::cout.setf(std::ios_base::binary);
#endif
bool has_more = false;
std::cout.write("IfcOpenShell-0.2.0",18);
std::cout.flush();
const IfcGeomObjects::IfcGeomObject* ifc_geom = 0;
while (1) {
std::string command;
std::cin >> command;
if ( command == "load" ) {
std::string fn;
std::getline(std::cin,fn);
fn = fn.erase(0,fn.find_first_not_of(" "));
has_more = IfcGeomObjects::Init(fn.c_str(),true,0,&std::cerr);
std::cout.write(has_more ? "y" : "n",1);
std::cout.flush();
} else if ( command == "loadstdin" ) {
std::cout << "ok" << std::flush;
int len;
std::cin >> len;
std::cout << "ok" << std::flush;
has_more = IfcGeomObjects::Init(std::cin,len,true,0,&std::cerr);
std::cout.write(has_more ? "y" : "n",1);
std::cout.flush();
} else if ( command == "get" ) {
if ( !has_more ) {
std::cout << "Not loaded" << std::flush;
} else {
ifc_geom = IfcGeomObjects::Get();
const int vcount = ifc_geom->mesh->verts.size() / 3;
std::cout.write((char*)&vcount,sizeof(int));
std::cout.write((char*)&ifc_geom->mesh->verts[0],sizeof(float)*vcount*3);
const int fcount = ifc_geom->mesh->faces.size() / 3;
std::cout.write((char*)&fcount,sizeof(int));
std::cout.write((char*)&ifc_geom->mesh->faces[0],sizeof(int)*fcount*3);
std::cout.flush();
}
} else if ( command == "type" ) {
if ( ! ifc_geom ) {
std::cout << "Not loaded" << std::flush;
} else {
std::cout << ifc_geom->type << std::flush;
}
} else if ( command == "guid" ) {
if ( ! ifc_geom ) {
std::cout << "Not loaded" << std::flush;
} else {
std::cout << ifc_geom->name << std::flush;
}
} else if ( command == "next" ) {
if ( !has_more ) {
std::cout << "Not loaded" << std::flush;
} else {
has_more = IfcGeomObjects::Next();
std::cout.write(has_more ? "y" : "n",1);
std::cout.flush();
}
} else if ( command == "quit" || command == "exit" ) {
std::cout << "Bye" << std::flush;
break;
} else {
std::cout << "Unknown command " << command << std::flush;
}
}
}